question 5 (1 point)\nselect the correct name of the structure\n4 - ethylpentane\n2 - ethylpentane\n4…

Explanation:

Step1: Identify the longest carbon - chain

The longest continuous carbon - chain has 6 carbon atoms. So, the parent hydrocarbon is hexane.

Step2: Locate the substituent

The methyl group ($-CH_3$) is attached to the 3rd carbon atom of the hexane chain.

Answer:

3 - methylhexane